ExtUtils::Mkbootstrap - make a bootstrap file for use by DynaLoader
Mkbootstrap
Mkbootstrap typically gets called from an extension Makefile.
There is no *.bs file supplied with the extension.
Instead,
there may be a *_BS file which has code for the special cases,
like posix for berkeley db on the NeXT.
This file will get parsed,
and produce a maybe empty @DynaLoader::dl_resolve_using array for the current architecture.
That will be extended by $BSLOADLIBS,
which was computed by ExtUtils::Liblist::ext().
If this array still is empty,
we do nothing,
else we write a .bs file with an @DynaLoader::dl_resolve_using array.
The *_BS file can put some code into the generated *.bs file by placing it in $bscode.
This is a handy 'escape' mechanism that may prove useful in complex situations.
If @DynaLoader::dl_resolve_using contains -L* or -l* entries then Mkbootstrap will automatically add a dl_findfile() call to the generated *.bs file.
